KR20170062432A - Mixer For Complex Material - Google Patents

Abstract

The present invention relates to a stirring device for a starting material for a mixed material, which can stir evenly by mixing a heterogeneous raw material with a synthetic resin raw material, such as a stone, by increasing the rotation speed. The composition is; An agitating tank having an elongated cylindrical shape in which a raw material input portion is provided at one side and a mixed liquid outlet is provided at the other side; A center shaft rotatably installed in the stirring tank; A first stirring blade radially installed on the central axis along the extending direction of the central axis; A rotary cylinder rotatably installed in the stirring tank, the rotary cylinder being disposed outside the center shaft; A second stirring vane protruding from the inside of the rotary cylinder so as to face the center of the stirring vessel; And a driving unit for rotating the center shaft and the rotary cylinder in directions opposite to each other.

Description

Mixer For Complex Material}

The present invention relates to a stirring device, and more particularly, to an agitating device for a composite raw material which can be agitated evenly by increasing the rotational speed and pressure even when a raw material such as a stone and a synthetic resin is stirred.

Urethane insulation used for insulation is made into a certain shape by adding various auxiliary materials to the urethane raw solution at the time of manufacture, and then mixing and curing.

The additional material may be pentane gas, a catalyst, or a flame retardant as a foam material. Recently, flame retardants such as stones are used. It is not easy to stir all the materials evenly because various kinds of materials having different physical properties are stirred.

The conventional stirring apparatus includes a stirring tank, a material input section for inputting various materials into the stirring tank, a stirring shaft for uniformly stirring the input material, a stirring shaft for installing a plurality of blades, and a discharge section for discharging the mixed liquid do. The conventional stirring device includes one stirring shaft and a plurality of stirring blades installed along the longitudinal direction of the stirring shaft as disclosed in Korean Utility Model Application No. 20-2009-0006074.

According to the conventional stirring apparatus, when a material having a high specific gravity is mixed in the urethane composite liquid, the material is not uniformly distributed if the stirring speed is low. This is because high specific gravity tends to precipitate during the stirring process.

Korean Patent Application No. 10-2012-0118015 Korean Utility Model Registration Application No. 20-2009-0006074

An object of the present invention with respect to the above problems is to provide an apparatus for mixing and stirring a composite raw material, for example, a urethane composite liquid for producing urethane heat insulator, wherein even when the specific gravity deviation is large, And an agitating device for agitating the agitator. Another object of the present invention is to provide a stirring device for a composite raw material which can increase the productivity by increasing the stirring speed.

The above object is achieved by an agitating tank having an elongated cylindrical shape in which a raw material supply portion is provided on one side and a mixed solution discharge port is provided on the other side; A center shaft rotatably installed in the stirring tank; A first stirring blade radially installed on the central axis along the extending direction of the central axis; A rotary cylinder rotatably installed in the stirring tank, the rotary cylinder being disposed outside the center shaft; A second stirring vane protruding from the inside of the rotary cylinder so as to face the center of the stirring vessel;

And a driving part for rotating the center shaft and the rotating cylinder in opposite directions to each other.

According to an aspect of the present invention, the first stirring blade and the second stirring blade are constituted by a first unit stirring blade having a plurality of unit stirring vanes along the extending direction of the center shaft, The first and second unit agitating blades may be alternately installed.

According to another aspect of the present invention, the driving unit simultaneously drives the first and second stirring vanes by a single driving motor,

A sun gear installed on the central axis and receiving a rotational force directly from the driving motor; A ring gear connected to the rotating cylinder; And a transmission gear that circumscribes the sun gear and is in contact with the ring gear and transmits the rotational force of the sun gear to the ring gear.

According to the present invention, the first stirring blade and the second stirring blade are rotated in different directions in one stirring tank, so that the stirring effect of the urethane foamed liquid is remarkably enhanced. More specifically, even when a synthetic resin mixture liquid contains a heterogeneous component such as a stone, even when the mixing rate and the pressure are increased, the composite raw material is uniformly mixed.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view of a foaming liquid stirring apparatus for a composite raw material according to an embodiment of the present invention. Fig.
2 is a front structural view of a driving unit of a stirring apparatus for a composite raw material according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying FIGS. 1 to 2 at the same time.

An agitating tank 1 having a long cylindrical shape provides a stirring space 100. The stirring tank 1 includes a cylindrical main body 3 provided with flanges 5 and 7 at both ends thereof and lid plates 9 and 11 fastened and fixed at both ends of the main body. The inlet side cover plate 9 is provided with a central shaft coupling hole 15 in which the center shaft 13 is inserted and the discharge side cover plate 11 is provided with a discharge hole 17 through which the mixture is discharged. On one side of the agitating tank 1, there is provided a raw material input portion, and on the other side, a mixed liquid, for example, a bubble generating liquid discharge portion is provided. The mixture discharged from the stirring tank 1 is introduced into a molding machine or the like through a nozzle or the like. When the object to be treated is a foamed liquid, the mixed foamed liquid is molded into a heat insulating plate having a constant thickness by a molding machine. The present invention can be used for mixing various raw materials as well as for non-insulating materials. Only the foamed liquid used for the heat insulating material is described as one example of them.

The raw material input portion provided at one side of the agitating tank 1 is provided with a plurality of raw material input ports 19 provided along the circumferential direction of the stirring tank 1 and a temporary storage space 21 in which the input raw material is temporarily stored. The mixed workpiece is discharged to the outside through a discharge pipe (23) in the form of a hopper.

For the uniformity of the quality of the insulation plate, uniform mixing of the raw materials should be performed inside the stirring tank (1).

A central shaft (13) is rotatably installed inside the stirring tank (1). A shaft housing 25 is integrally formed on the closing side cover plate 9 of the stirring tank 1 so as to support the central shaft 13. The center shaft 13 is supported by a plurality of journal bearings 27 provided inside the shaft housing 25. [

The center shaft 13 can be rotated by the driving motor 29 provided outside the stirring tank 1 by itself as a rotation axis X. [ The discharge side end portion of the center shaft 13 is stably fixed to the inside of the stirring tank 1 by the center shaft bearing 31. [

The first stirring vane 33 is radially provided on the central shaft 13 along the extending direction of the central shaft 13. [ The first stirring blade 33 generates a thrust force from the left side to the right side in the drawing of Fig. 1 like an impeller. Therefore, the mixed liquid is forcibly transferred to the right side, stirred and discharged. The first stirring vane 33 is composed of a plurality of first unit stirring vanes 33a provided at regular intervals along the longitudinal direction of the center shaft 13. [

Inside the agitating tank 1, a rotary cylinder 35 is rotatably installed on the periphery of the central shaft 13. The rotation center of the rotary cylinder 35 is the same as the rotation axis X of the center shaft 13. [ The rotary cylinder (35) is rotatably supported inside the stirring tank (1) by a cylinder bearing (37). The tubular bearing (37) is installed at both ends of the rotary cylinder (35).

The second stirring blade 39 is protruded from the inner wall of the rotary cylinder 35 so as to face the center of the stirring tank 1. The second stirring vane 39 is also installed so that the mixed liquid receives the thrust from the left side to the right side in the drawing of Fig. The second agitating blades 39 are composed of a plurality of second unit agitating blades 39a provided at regular intervals along the longitudinal direction of the rotating cylinder 35. The first and second unit stirring blades 33a and 39a may be alternately installed. The first and second unit stirring blades 33a and 39a have a portion L overlapping each other. The overlapped portion (L) is preferably 40 to 60% of the total blade length (M). In some cases, when the rotational resistance is large, the overlapped portion L can be reduced.

According to the present invention, the driving unit has a structure for rotating the center shaft 13 and the rotary cylinder 35 in opposite directions to maximize the stirring effect. The driving unit will be described below. The drive unit includes one drive motor (29) and power transmission means for transmitting the rotational force thereto to the rotary cylinder (35). The drive motor 29 directly rotates the central shaft 13 and the power transmission means is adapted to transmit the rotational force of the central shaft 13 to the rotary cylinder 35 as mentioned above.

The power transmission means includes a sun gear 43, a ring gear 45 and a transmission gear 47. These power transmission means are not in contact with the mixed liquid by being installed in the sealed gear box 49.

The sun gear 43 is mounted on the center shaft 13 and receives rotational force directly from the drive motor 29. And the ring gear 45 is installed on the rotary cylinder 35 so as to be positioned at the periphery of the sun gear 43.

A transmission gear 47 for transmitting the rotational force of the sun gear 43 to the ring gear 45 is fixed to the gear box 49 so as to surround the sun gear 43 and to be in contact with the ring gear 45. The transmission gear 47 is only allowed to rotate about the axis Y in a state where the position is fixed by the fixed shaft 51. [

A plurality of transmission gears 47 may be provided around the sun gear 43. But only one is shown in the accompanying drawings.

The discharge side end portion of the central shaft 13 is supported by the discharge side cover plate 11 by the thrust bearing 53. At least one discharge hole 17 is formed in the discharge side cover plate 11, and the mixture is discharged to the outside through the discharge hole 17.

According to the embodiment of the present invention, rotational force is transmitted to the rotary cylinder 35 at two positions along the longitudinal direction of the central shaft 13, that is, at the front end and the rear end. That is, the power transmission mechanism described above is equally installed at the rear end of the central shaft 13 as well. The same reference numerals are used to refer to the above description.

This is to prevent a torque load from being applied to the center shaft 13 and to transmit the rotational force to the rotating cylinder 35 more stably and stably. The gear box 49 is provided with a plurality of gate holes 55 so that the mixed liquid can be introduced into the rotary cylinder 35 or discharged therefrom.

The mixing apparatus according to the present invention can be used in a wide pressure range (for example, 5 to 200 kgf / cm 2). It is easy to adjust the pressure through the adjustment of the rotation speed of the central shaft 13.

The configuration shown and described above is merely a preferred embodiment based on the technical idea of the present invention. It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention.

1: Stirring tank 3:
9, 11: cover plate 13: central axis
15: central shaft coupling hole 17: exhaust hole
19: feedstock inlet 21: temporary storage space
23: exhaust pipe 25: shaft housing
27: journal bearing 29: drive motor
31: center shaft bearing 33, 39: first and second stirring blades
43: sun gear 45: ring gear
47: transmission gear 49: gear box
51: fixed shaft 53: thrust bearing

Claims (1)

(3) having flanges (5, 7) at both ends and a cylindrical body (3) provided at one end thereof with a raw material input portion for inputting two or more raw materials different from each other such as stones and synthetic resin, A stirring tank (1) including cover plates (9, 11) fastened and fixed;
A raw material input part composed of a plurality of raw material input ports 19 provided along the circumferential direction of the stirring tank and a temporary storage space 21 in which the input raw material is temporarily stored;
A center shaft (13) rotatably installed in the stirring tank;
A first stirring blade (33) radially installed on the central shaft (13) along the extending direction of the central shaft (13);
A rotary cylinder 35 installed inside the stirring tank 1 so as to be rotatable and installed outside the center shaft 13;
A second stirring blade (39) protruding from the inside of the rotary cylinder (35) so as to face the center of the stirring tank (1);
A driving unit for increasing the stirring speed and the pressure to increase the stirring effect even when the center shaft 13 and the rotating cylinder 35 are rotated in opposite directions to each other to include a heterogeneous component;
Wherein the driving unit comprises:
The first and second stirring vanes 33 and 39 are driven by a single driving motor 29 to simultaneously rotate the first and second stirring vanes 33 and 39. The sun gear 33 is mounted on the center shaft 13 and receives rotational force from the driving motor 29, (43); A ring gear 45 connected to the rotating cylinder 35; And a transmission gear (47) that circumscribes the sun gear (43) and is in contact with the ring gear (45) and transmits the rotational force of the sun gear (43) to the ring gear (45);
The sun gear 43, the ring gear 45 and the transmission gear 47 are installed at the front end and the rear end of the central shaft 13, respectively, so that the sun gear 43, the ring gear 45 and the transmission gear 47 are disposed at two positions along the longitudinal direction of the central shaft 13, (35) of the mixing device (20).

Images